Audiobook (.m4b) with chapter breaks using excising aac/mp3 files?

what I've currently being doing is getting free, public domain books like shakespear or h.g. wells, converting to aac, changing the extension and poof (6 files for 6 chapters, and with a little fiddling chapter no#, or name of chapter)

But today I downloaded a free audiobook at an attempt to see what it looked like and saw the bookmarks! SOOOOO. why not change my existing?! cause its been freaking hard so far. I used a tool called "join together", loaded track listings, setup as stereo, 64kbps, chapterized.. What I got was a small m4b file, with only 32kbps, mono and during chapterizing it keeped going on and on and on. I kept it all night to make sure and nada

I also found a howto for audio cds that seems would work but that won't help
alll stuff is mp3, or ogg -- unforunately

SOOOO here I am, looking for a way to either convert, combine AND save to audiobook /w chapters or just save to audiobook /w chapters. Can someone please provide me some information. Preferably free toys, and preferably windows (because my macbook is junk). If this is also a way for me to chapterize tvshows or movies.. let me know? I'd preferably like to do that with some things I converted for a trip comming later

If this is also something that can be done for movie /tv show I'd like to hear

what I've currently being doing is getting free, public domain books like shakespear or h.g. wells, converting to aac, changing the extension and poof (6 files for 6 chapters, and with a little fiddling chapter no#, or name of chapter)

But today I downloaded a free audiobook at an attempt to see what it looked like and saw the bookmarks! SOOOOO. why not change my existing?! cause its been freaking hard so far. I used a tool called "join together", loaded track listings, setup as stereo, 64kbps, chapterized.. What I got was a small m4b file, with only 32kbps, mono and during chapterizing it keeped going on and on and on. I kept it all night to make sure and nada

I also found a howto for audio cds that seems would work but that won't help
alll stuff is mp3, or ogg -- unforunately

SOOOO here I am, looking for a way to either convert, combine AND save to audiobook /w chapters or just save to audiobook /w chapters. Can someone please provide me some information. Preferably free toys, and preferably windows (because my macbook is junk). If this is also a way for me to chapterize tvshows or movies.. let me know? I'd preferably like to do that with some things I converted for a trip comming later

If this is also something that can be done for movie /tv show I'd like to hear